For car enthusiasts and DIY mechanics, having a reliable OBD2 scanner is essential. The Bafx Products Bluetooth Diagnostic Obd2 Scanner is a popular choice, known for its compatibility and solid connection. Many users appreciate its performance with apps like Torque Pro, but some might find it constantly drawing power from the car battery, even when the ignition is off. This article provides a simple, step-by-step guide to modify your BAFX OBD2 adapter for switched 12V power, ensuring it only operates when your vehicle is running or in ACC mode. This modification is straightforward and can be completed in about 15 minutes with basic tools.
Why Modify for Switched Power?
The standard OBD2 port provides constant 12V power. While convenient for some applications, this means that an OBD2 adapter left plugged in can slowly drain your car battery over time, especially if your vehicle sits unused for extended periods. By modifying your BAFX Bluetooth OBD2 scanner for switched power, you ensure it only receives power when the ignition is turned on or in accessory mode. This eliminates the risk of battery drain and provides peace of mind.
Step-by-Step Guide to Modify Your BAFX OBD2 Scanner
Before starting, ensure you have a small Phillips head screwdriver. The modification process is simple and reversible, taking only a few minutes.
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Open the Case: Locate the four screws hidden beneath the blue label on your BAFX adapter. Carefully peel off the label and remove these four screws.
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Separate the Unit: Gently separate the two halves of the adapter’s case. You will see a white connector attaching the OBDII port to the circuit board. Unplug this white connector.
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Remove the OBDII Connector: You can now easily lift the OBDII connector, with its wires, completely out of the adapter’s housing. This provides easy access to the pins.
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Relocate the Power Wire: Identify pin 16 and pin 8 on the OBDII connector. Pin 16 (typically a thicker wire) provides constant 12V power. Carefully move the wire from pin 16 to pin 8. Pin 8 is the switched ACC 12V power supply. On the connector, pin 16 is usually on the top left, and pin 8 is on the bottom left, making this wire move very straightforward.
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Reassemble: Place the OBDII connector back into the case and reconnect the white connector to the circuit board.
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Close the Case: Carefully reassemble the two halves of the case and secure them with the four screws. Be mindful of the five small LEDs on the circuit board to avoid bending them.
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Reapply Label (Optional): You can re-stick the blue label or leave it off, depending on your preference.
Conclusion
Your BAFX Products Bluetooth Diagnostic OBD2 Scanner is now modified for switched power! It will function exactly as before, but will only power on when your car’s ignition is on or in ACC mode. This simple modification ensures you can leave your scanner plugged in without worrying about battery drain. Enjoy the enhanced convenience and peace of mind with your modified BAFX Bluetooth OBD2 adapter.
